我们如何使用 hive 获得 1000 个表的描述? [英] How do we get the 1000 tables description using hive?
问题描述
我有1000张表，需要一一查看 I have 1000 tables, need to check the 查询 Metastore Query the metastore 蜂巢 MySQL (Metastore) 这篇关于我们如何使用 hive 获得 1000 个表的描述?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！describe ;.不是一个一个运行，你能不能给我一个命令来一次获取N"个表.
describe <table name>; for one by one. Instead of running one by one, can you please give me one command to fetch "N" number of tables in a single shot.推荐答案
create database my_db_1;
create database my_db_2;
create database my_db_3;
create table my_db_1.my_tbl_1 (i int);
create table my_db_2.my_tbl_2 (c1 string,c2 date,c3 decimal(12,2));
create table my_db_3.my_tbl_3 (x array<int>,y struct<i:int,j:int,k:int>);
use metastore
;
select d.name as db_name
,t.tbl_name
,c.integer_idx + 1 as col_position
,c.column_name
,c.type_name
from DBS as d
join TBLS as t
on t.db_id =
d.db_id
join SDS as s
on s.sd_id =
t.sd_id
join COLUMNS_V2 as c
on c.cd_id =
s.cd_id
where d.name like 'my\_db\_%'
order by d.name
,t.tbl_name
,c.integer_idx
;
+---------+----------+--------------+-------------+---------------------------+
| db_name | tbl_name | col_position | column_name | type_name |
+---------+----------+--------------+-------------+---------------------------+
| my_db_1 | my_tbl_1 | 1 | i | int |
| my_db_2 | my_tbl_2 | 1 | c1 | string |
| my_db_2 | my_tbl_2 | 2 | c2 | date |
| my_db_2 | my_tbl_2 | 3 | c3 | decimal(12,2) |
| my_db_3 | my_tbl_3 | 1 | x | array<int> |
| my_db_3 | my_tbl_3 | 2 | y | struct<i:int,j:int,k:int> |
+---------+----------+--------------+-------------+---------------------------+
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